Number Transform

Sometimes you need to do one thing to a number: round it, flip its sign, take its square root. Pulling in a full math node for that feels like overkill, which is why Number Transform exists - a single node with a dropdown of eight single-value operations, from floor to sin to negate. It's the "calculator" node of DebugPadawan's ComfyUI Essentials, a pure-Python utility pack. No models, no GPU, just math.* in a dropdown.

How it works

Two required inputs:

• value - the number to operate on (FLOAT, default 0, step 0.001)
• operation - the dropdown, eight choices: floor, ceil, round, abs, sin, cos, sqrt, negate

Two outputs (always both):

• float_val - the result as a FLOAT
• int_val - the result as an INT (truncated)

The implementation is a straightforward dispatch: floor/ceil/round snap the value to a whole number, abs takes the absolute value, sin/cos compute the trig (expect radians, not degrees!), sqrt takes the square root, and negate flips the sign. One deliberate behavior: sqrt of a negative number returns 0.0 instead of erroring - Python's math.sqrt would raise, and the author chose to be forgiving.

Where you'll use it

• Resolution math. floor or round a computed resolution so it's a clean multiple, then feed it to a latent/image size node that chokes on fractional dimensions.
• Animation. sin/cos of a frame counter gives you smooth oscillation for sweeping a parameter - a cheap easing curve without writing anything.
• Direction flips. negate reverses a value; abs strips sign. Both pair nicely with Number Compare for conditional branching.
• Spot math mid-pipeline - instead of adding a whole math node, transform in place.

Installing it

Whole pack, one install. ComfyUI Manager, searching for "DebugPadawans-ComfyUI-Essentials," or:

cd ComfyUI/custom_nodes
git clone https://github.com/DebugPadawan/DebugPadawans-ComfyUI-Essentials

Then restart ComfyUI. The requirements (numpy, torch, opencv-python) are already satisfied by stock ComfyUI; no downloads, no models. And when you're searching Manager, don't confuse this with cubiq's "ComfyUI Essentials" - a different, larger pack in maintenance mode.

Gotchas

• Trig is in radians. sin(90) is not 1; it's sin(90 radians). If you're thinking in degrees, convert first (a Number Remap from degrees to radians is to_min=0, to_max=3.14159).
• int_val truncates toward zero, it doesn't round - int(-2.7) is -2. If you wanted rounding, use the round operation and take float_val.
• sqrt of negative → 0.0 silently. Great for not crashing, but easy to misread as a bug if you expected an error.
• It's a small, quiet pack; for a node this mechanical, the code is the documentation.